A baker notices dough rising due to gas production by yeast in the absence of oxygen. What is the chemical nature of this gas?
Q1. A baker notices dough rising due to gas production by yeast in the absence of oxygen. What is the chemical nature of this gas?
Answer: Carbon dioxide
Explanation: Yeast produces ethanol and CO2 during anaerobic respiration; lactic acid is tempting as it is an animal anaerobic product.